Annual report pursuant to Section 13 and 15(d)

Presentation and Summary of Significant Accounting Policies - Additional Information (Details 1)

v3.20.4
Presentation and Summary of Significant Accounting Policies - Additional Information (Details 1)
Dec. 31, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-01-01  
Significant Accounting Policies [Line Items]  
Expected Recognition of revenue over remaining contract terms 12 months